Solidification of High-Concentration Electrolytes with Faujasite As Nanosized Porous Zeolite Additive for Solid-Type Batteries

作者：Schanth Hacatrjan, Kosuke Nakamoto, Izumi Yamada, Naoki Inui, Kazuhiro Shibahara, Daisuke Inokuchi, K. Miyazaki, Takeshi Abe · 发表于：ECS Meeting Abstracts · 年份：2024 · DOI：10.1149/ma2024-02674425mtgabs

Introduction: With a renewed push for commercialization of Li-metal anode batteries due to their potential to drastically increase battery performance, new electrolyte systems need to be investigated that can not only withstand the harsh reduction potential of Lithium, but also be used with cathodes operating above 4 V. Commercially used electrolytes such as ethylene carbonate (EC) and dimethyl carbonate (DMC), with lithium-salt concentrations in the range of 1 M exhibit high ionic conductivities, however, are susceptible to leakage, show high volatility which together with the high flammability of organic electrolyte solutions, lead to safety concerns and show incompatibilities with Li-metal anodes.[1][2][3] High-concentration liquid electrolytes (HCLE) due to their stability against Li-metal anodes and their wide electrochemical stability window are viewed as promising alternatives.[4][5] However, commercially used separators made from polypropylene (PP) suffer from low wettability with high-concentration electrolytes[6] and are susceptible to thermal shrinking leading to fatal malfunctioning of the cell.[7] Therefore, there is an interest in finding new separator materials with excellent wettability that can utilize the unique properties of high-concentration electrolytes while simultaneously increasing its performance by enhancing its safety properties.In this report we propose the use of nanosized lithiated faujasite-type zeolite (FAUX-Li) powder as solidification agent ...